Hi,
Sorry for the late response, I have been extremely busy. If I
understand you correctly, you can achieve the effect you want by
setting the minimum width of the center to the desired amount, and the
other containers will be pushed down. Without setting any preferred,
minimum or maximum width, the center container will take up the
remaining space after the other containers have been placed.
Alternatively you could change the code of the layout algorithm, or
nest different layouts (some behave differently with respect to which
components are preferred over others.)
If you need more help, perhaps you could make a simple example of the
desired layout, and I'll try to figure out how to do it with the
layout algorithms :)
Best regards,
Bram